tunXten!

SoftEther VPN ("SoftEther" means "Software Ethernet") is one of the world's most powerful and easy-to-use multi-protocol VPN software. It runs on Windows, Linux, Mac, FreeBSD and Solaris.

Tunnelblick is a free, open source graphic user interface for OpenVPN on OS X and macOS. It provides easy control of OpenVPN client and/or server connections.

Shimo supports every major VPN protocol that is currently available: The widely used CiscoVPN, the very secure OpenVPN and all standard-compliant IPSec connections. It also handles Point-to-Point Tunneling (PPTP) and Layer 2 Tunneling (L2TP) protocols. Even Cisco’s new Secure Socket Layer (SSL) protocol AnyConnect is supported by Shimo – the most flexible VPN client for Mac. Shimo also enables you to establish encrypted Secure Shell (SSH) connections including port forwarding for secure web browsing. »

Viscosity is a VPN client for Mac OS X and Windows. It allows a user to connect to a VPN server and establish a VPN connection. Viscosity provides a clear and intuitive user interface for creating, editing, and controlling VPN connections, and makes it easy for users new to VPN to get started.

Fruho is an open-source, zero-configuration VPN manager. It supports automatic setup and allows easy switching between VPN providers.

Say Hello to Sidestep

OAST is a cross-platform front-end (GUI) for OpenVPN-client, allowing to manage multiple. Its quite simple in use and provides base functionality such as monitoring connection status. Application is written in Java so it works on both Windows and Linux

OpenVPN Manager is a tool which controls OpenVPN. It is written in C# and uses the management interface of OpenVPN to control connections. Use the smart card feature in a simple way, enter passwords, monitor the OpenVPN log etc... The goal is to be a simple but powerful OpenVPN GUI.

OpenVPN MI GUI is a Windows graphical user interface for the OpenVPN client management interface.